Найдите крайний и cредний член пропорции: 1. х/15 = 0.4/0.5 2. 24/0.8 = 10/х 3. 1.8/х = 0.6/10 4. 18/72 = х/1.2 5. 35/108 = х/33 6. 1/х = 100/2.5